A77 or A850?

If you had a choice which one would you keep for landscape and architectural photography? The primary criteria is image quality and accurate color reproduction. This may be apples and oranges as one is APS-C and the other full frame but Sony has been claiming that A77 comes very close to full frame. If that is REALLY the case then A77 may be preferable to me.

High ISO is not important so long as ISO 1000 gives clean results (A850 is not a high ISO champ anyway). Images should be VERY clean till ISO 800 and shadow noise in not acceptable.